“We can draw lessons from the past, but we cannot live in it.”

“For the most part, these are not new lessons, but lessons learned in different circumstances and surroundings. The fact that they are not new is of course a lesson in itself — we must continually strive to benefit from past experiences and structure our management so that past related experience can be brought to bear on current problems.”

“We face the future fortified with the lessons we have learned from the past. It is today that we must create the world of the future.”

“Some of the best lessons we ever learn are learned from past mistakes. The error of the past is the wisdom and success of the future.”

“Those who take the virtuous path to becoming wise know that they can learn from anyone, and can draw lessons from all events.”

“Quit telling us to forget the past and never look back. We learned from the past, gained wisdom from the past that we apply every day in the process of living. If we forget the past, we’ll forget who we are since that’s where we came from.”

“Intelligence is loose in the galaxy. Power is in our hands, for better or worse. We can modify Nature’s rules, if we dare, but we cannot ignore her lessons.”

“We should not look back unless it is to derive useful lessons from past errors, and for the purpose of profiting by dearly bought experience.”

“The past is rich in lessons from which we would greatly profit except that the present is always so full of Special Circumstances.”

“Draw from others the lesson that may profit yourself.”
Periclum ex aliis facito tibi quod ex usu siet.